患难夫妻的英文是「husband and wife who have gone through difficult times together」
huan nan fu qi
患难:忧虑和灾难。指经受过困苦考验,能够同甘共苦的夫妻。
唐·元稹《遣悲怀·二》:“情知此恨人人有,贫贱夫妻百事哀。”